TWI714055B - Data transmission method and data transmission system - Google Patents

Abstract

A data transmission method suitable for a data transmission system with a host and a peripheral device is disclosed. The data transmission method includes the following steps: setting, by a processor of the host, at least one identification number to at least one packet stored in the host; transmitting, by a transmission medium, the at least one packet from the host to the peripheral device; allocating, by the processor of the peripheral device, the at least one packet to several temporary storage blocks of the memory of the peripheral device corresponding to the at least one identification number according to the at least one identification number of the at least one packet, wherein the thresholds of at least two of the temporary storage blocks are different; and when one of the temporary storage blocks reaches the threshold value of the one of the temporary storage blocks, transmitting, by the processor of the peripheral device, the at least one packet stored in the one of the temporary storage blocks.

Description

Data transmission method and data transmission system

This case is about a data transmission method and a data transmission system, and particularly a data transmission method and a data transmission system for Universal Serial Bus (USB).

In a data transmission system, if the data in the memory of the main system memory is to be transferred to the memory of the peripheral components through a universal serial bus (USB), aggregation technology will be used to reduce the transfer (transfer) frequency. However, for high-priority data, if the data must be processed according to the sequence of the arrangement, the delay time will be greatly increased. However, if aggregation technology is not used, it will increase the utilization of the central processing unit.

Therefore, how to prioritize the processing of high-priority data through the streaming mode without increasing the utilization of the CPU, thereby improving the data delay time, is one of the problems to be improved in the field.

One aspect of this case is to provide a data transmission method suitable for data transmission systems. The data transmission system includes a host and peripheral devices. The data transmission method includes the following steps: the processor of the host sets at least one identification number to at least one packet stored in the host; transmits at least one packet from the host to the peripheral device via the transmission medium; At least one identification number is allocated to at least one packet to a plurality of temporary storage blocks of the memory of the peripheral device corresponding to the at least one identification number, wherein the plurality of temporary storage blocks respectively include threshold values, and among the plurality of temporary storage blocks At least the thresholds of the two are different; and when one of the multiple temporary storage blocks reaches the threshold of that one of the multiple temporary storage blocks, the multiple temporary storage blocks are sent through the output input interface At least one package of the part stored by that person.

Another aspect of this case is to provide a data transmission system including a host and peripheral devices. The host includes memory and processor. The memory is used to store at least one packet. The processor is used for setting at least one identification number to at least one packet, and transmitting the at least one packet via the transmission medium. The peripheral device is connected to the host via the transmission medium to receive at least one packet. Peripheral devices include memory and processors. The memory contains multiple temporary storage blocks. The plurality of temporary storage blocks respectively include threshold values, and at least two of the plurality of temporary storage blocks have different threshold values. The processor is used to allocate at least one packet to a plurality of temporary storage blocks corresponding to the at least one identification number according to the at least one identification number of the at least one packet, and when one of the plurality of temporary storage blocks reaches the plurality of temporary storage blocks When the threshold value of the one in the one, at least one packet of the portion stored by the one in the plurality of temporary storage blocks is transmitted through the I/O interface.

Therefore, according to the technical aspect of the present case, the embodiments of the present case provide a data transmission method and a data transmission system, and especially a data transmission method and a data transmission system related to a universal serial bus, so as not to increase With increased CPU utilization, high-priority data is processed first through the streaming mode, thereby improving data delay time.

100‧‧‧Data Transmission System

110‧‧‧Host

150‧‧‧Peripherals

112, 152‧‧‧Memory

114, 154‧‧‧ processor

116、156‧‧‧Multiplex circuit

158‧‧‧Input and output interface

152-1 to 152-N‧‧‧temporary block

170‧‧‧Transmission medium

P1 to PN‧‧‧Packet

S1 to SN‧‧‧identification number

300‧‧‧Data transmission method

Steps S310 to S360‧‧‧

In order to make the above and other objects, features, advantages and embodiments of the present invention more comprehensible, the description of the accompanying drawings is as follows: Figure 1 is a schematic diagram of a data transmission system according to some embodiments of the present invention Figure 2 is a schematic diagram illustrating the data transmission method of the present invention according to some embodiments of this case; and Figure 3 is a flow chart of a data transmission method according to some embodiments of this case.

The following disclosure provides many different embodiments or illustrations for implementing different features of the present invention. The components and configurations in the special case are used in the following discussion to simplify the case. Any examples discussed are only for illustrative purposes, and will not limit the scope and significance of the present invention or its examples in any way.

FIG. 1 is a schematic diagram of a data transmission system 100 according to some embodiments of the present application. The data transmission system 100 includes a host 110 and a peripheral device 150. The host 110 and the peripheral device 150 are connected via a transmission medium 170. The host 110 includes a memory 112 and a processor 114. The peripheral device 150 includes a memory 152, a processor 154, and an input/output interface 158. The memory 152 includes a plurality of temporary storage blocks 152-1 to 152-N. Multiple The temporary storage blocks 152-1 to 152-N contain threshold values respectively. The data transmission system 100 shown in FIG. 1 is only an example, but the case is not limited to this.

In the embodiment of this case, the memories 112 and 152 are First In First Out (FIFO) memories. Of course, the implementation of the present invention is not limited to this. In some embodiments, the transmission medium 170 may be a universal serial bus (USB) transmission line or a USB interface transmission circuit. In some embodiments, the peripheral device 150 may be a wired network card or a wireless network card, but the implementation of the present invention is not limited to this. In some embodiments, the transmission medium 170 is a USB3.0 specification.

In terms of the connection relationship, the host 110 and the peripheral device 150 are connected via the transmission medium 170. The memory 112 is coupled to the processor 114. The memory 152 is coupled to the processor 154, and the processor 154 is coupled to the input/output interface 158.

In terms of operation, the memory 112 of the host 110 is used to store at least one packet. When the host 110 transmits at least one packet to the peripheral device 150, the processor 114 of the host 110 sets an identification number (Stream ID) to each packet. Specifically, the processor 114 determines the respective priority of at least one packet, and sets at least one identification number (Stream ID) to each packet according to the respective priority of the at least one packet. Then, the processor 114 of the host 110 transmits at least one packet to the peripheral device 150 via the transmission medium 170.

After the peripheral device 150 receives at least one packet transmitted by the host 110, the processor 154 of the peripheral device 150 allocates at least one packet to the temporary storage block 152-1 corresponding to the identification number according to the respective identification number of the at least one packet. To 152-N. When one of the temporary storage blocks 152-1 to 152-N When the threshold is reached, the processor 154 executes the packet transmission process through the I/O interface 158 to transmit the packets temporarily stored in one of the temporary storage blocks 152-1 to 152-N via Ethernet or other Wired/wireless transmission to other devices. In another embodiment, the processor 114 on the host side executes the packet transfer procedure described above.

In some embodiments, the threshold value of each temporary storage block 152-1 to 152-N described above is set by the processor 114. The threshold can be the number of packets or storage capacity, but this case is not limited to this. In another embodiment, the threshold value of each temporary storage block 152-1 to 152-N is set by the processor 154 of the peripheral device 150.

For details, please refer to Figure 1 and Figure 2 together. FIG. 2 is a schematic diagram illustrating the data transmission method of the present invention according to some embodiments of the present application. The packets P1 to PN are packets transmitted from the host 110 in FIG. 1 to the peripheral device 150 in FIG. 1. The temporary storage blocks 152-1 to 152-N depicted in FIG. 2 have different lengths to represent different threshold values.

As shown in FIG. 2, the packets P1 to PN each include one of the identification numbers S1 to SN set by the host 110. For example, the processor 114 of the host 110 sets the identification number of the packet P1 to S1, the identification number of the packet P2 to S2, the identification number of the packet P3 to S1, the identification number of the packet PN to SN, and so on. Next, the host 110 transmits the packets P1 to PN to the peripheral device 150 in a bulk out transfer manner.

After the peripheral device 150 receives the packets P1 to PN, the processor 154 stores the packets P1 to PN according to the respective identification numbers of the packets P1 to PN To the temporary storage blocks 152-1 to 152-N corresponding to the identification numbers. For example, since the identification number of the packet P1 is S1, the processor 154 allocates the packet P1 to the temporary storage block 152-1 corresponding to the identification number S1 for storage; since the identification number of the packet P2 is S2, the processor 154 The packet P2 is allocated to the temporary storage block 152-2 corresponding to the identification number S2 for storage; since the identification number of the packet P3 is S1, the processor 154 allocates the packet P3 to the temporary storage area corresponding to the identification number S1 Block 152-1 stores; since the identification number of the packet PN is SN, the processor 154 allocates the packet PN to the temporary storage block 152-N corresponding to the identification number SN for storage, and the rest can be deduced by analogy.

Then, when one of the temporary storage blocks 152-1 to 152-N reaches the threshold, the processor 154 sends out the packets stored in one of the temporary storage blocks 152-1 to 152-N.

In some embodiments, the temporary storage block used to process high-priority packets contains a smaller threshold value for storing high-priority packets.

As shown in Figure 2, the threshold value of the temporary storage block 152-2 is smaller than the threshold values of the remaining temporary storage blocks, that is, the temporary storage block 152-2 is used to store high-priority packets. When the processor 114 in Figure 1 determines that the packet P2 is a high priority packet, the processor 114 sets the identification number of the packet of the packet P2 to S2. In this way, when the packet P2 is transmitted to the peripheral device 150, the processor 152 stores the high-priority packet P2 in the temporary storage block 152-2.

Since the temporary storage block 152-2 has a smaller threshold, the packets stored in the temporary storage block 152-2 can be sent out faster. For example, suppose the threshold value of the temporary storage block 152-2 is 1 packet. When the packet P2 is stored in the temporary storage block 152-2, the temporary storage block 152-2 reaches the threshold value. Therefore, the packet P2 can be sent. Compared with the temporary storage block 152-2, the remaining temporary storage blocks 152-1, 152-3 to 152-N, etc. contain larger threshold values and are stored in the remaining temporary storage blocks 152-1, 152 Packets from -3 to 152-N will not be sent until the temporary storage blocks 152-1, 152-3 and 152-N to which they belong have reached their respective thresholds.

In some embodiments, when the packet stored in one of the temporary storage blocks 152-1 to 152-N is sent, the processor 154 of the peripheral device 150 releases the temporary storage blocks 152-1 to 152-N One of the space. For example, when the processor 154 sends the packet of the temporary storage block 152-2 through the I/O interface 158, the processor 154 releases the space of the temporary storage block 152-2. In this way, the remaining packets containing the identification number S2 can be stored in the temporary storage block 152-2.

Please refer back to Figure 1. In some embodiments, the processor 114 further includes a multiplexing circuit 116 for obtaining at least one packet from the memory 112 and setting an identification number for each packet according to the priority of each packet. In some embodiments, the processor 154 further includes a multiplexing circuit 156 for obtaining the identification number of each packet from each packet, and assigning at least one packet to the corresponding temporary storage block according to the identification number.

As described above, in the embodiment of this case, different threshold values are set in each temporary storage block of the peripheral device, and an identification number is set to each packet. In this way, high-priority data can be stored in a temporary storage block with a lower threshold value without increasing the utilization of the CPU, so that it can be processed first in the streaming mode, thereby improving the data delay time.

Please refer to Figure 3. Figure 3 shows some embodiments according to this case A data transmission method 300 is shown. As shown in Fig. 3, the data transmission method 300 includes steps S310 to S360. To make the data transmission method 300 of this embodiment easy to understand, please refer to FIGS. 1 to 3 together.

Step S310: Set at least one identification number to at least one packet stored in the host. In some embodiments, step S310 may be executed by the processor 114 as shown in FIG. 1. For example, the multiplexing circuit 116 of the processor 114 obtains at least one packet from the memory 112, and sets an identification number for each packet according to the priority of each packet. Each identification number corresponds to the temporary storage blocks 152-1 to 152-N as shown in FIG. 1.

Step S320: Set the respective threshold values of the multiple temporary storage blocks of the peripheral device. In some embodiments, step S320 may be executed by the processor 114 or the processor 154 as shown in FIG. 1. For example, the processor 114 sets different threshold values for the respective temporary storage blocks 152-1 to 152-N. The threshold can be the number of packets or the storage capacity. In some embodiments, the temporary storage block used to store and process high-priority packets contains a smaller threshold value.

Step S330: At least one packet is transmitted from the host to the peripheral device. In some embodiments, step S330 may be executed by the processor 114 as shown in FIG. 1. For example, the processor 114 may transmit at least one packet to the peripheral device 150 via the transmission medium 170. In some embodiments, at least one packet is transferred in a bulk transfer (Bulk Out Transfer) manner.

Step S340: Determine whether one of the multiple temporary storage blocks reaches the threshold. If it is determined that one of the plurality of temporary storage blocks reaches the threshold value, step S350 is executed. If it is determined that one of the plurality of temporary storage blocks has not reached the threshold value, step S330 is executed to continue to transmit at least one packet from the host to the peripheral device.

In some embodiments, step S340 may be executed by the processor 154 as shown in FIG. 1. For example, please refer to Figure 2 together. If the threshold of the temporary storage block 152-2 is 1024 bytes (Byte). Assuming that when a packet P3 with a size of 1024 bytes is stored in the temporary storage block 152-2, it is determined that the temporary storage block 152-2 has reached the threshold. Conversely, if the threshold value of the temporary storage block 152-1 is 10240 bytes, when the temporary storage block 152-1 only stores packets P1 and P3 with a size of 1024 bytes, the temporary storage block 152 is determined -1 has not yet reached the threshold.

Step S350: Send the packet stored in one of the multiple temporary storage blocks. In some embodiments, step S350 may be executed by the processor 154 as shown in FIG. 1 via the input/output interface 158. For example, if the temporary storage block 152-2 reaches the threshold, the processor 154 sends at least one packet stored in the temporary storage block 152-2 through the input/output interface 158 via the input/output interface 158.

Step S360: Release the space of one of the multiple temporary storage blocks. In some embodiments, S360 may be executed by the processor 154 as shown in FIG. 1. For example, if at least one packet stored in the temporary storage block 152-2 has been sent from the I/O interface 158, the processor 154 releases the space of the temporary storage block 152-2 so that the rest of the packets containing the identification number S2 The packet can then be stored in the temporary storage block 152-2. In some embodiments, as shown in Figure 3, after releasing the space of one of the multiple temporary storage blocks, return to step S340 to continue to determine whether one of the multiple temporary storage blocks reaches the threshold .

In some embodiments, the processors 114 and 154 may be capable of storing, computing, reading data, receiving signals or messages, and transmitting signals or messages. Servers, circuits, central processing units (CPU), microprocessors (MCU) or other devices with equivalent functions.

In some embodiments, the memory 112, 152 can be implemented as read-only memory, flash memory, floppy disk, hard disk, optical disk, pen drive, tape, database accessible by the network or familiar with this technology It is easy to think of storage devices with the same function.

It can be seen from the above implementation of the present case that the embodiments of the present case provide a data transmission method and a data transmission system, and especially a data transmission method and a data transmission system related to a universal serial bus, so as to not increase the use of the central processing unit. At low rates, high-priority data is processed first through the streaming mode to improve data delay time.

In addition, the above examples include sequential exemplary steps, but these steps need not be executed in the order shown. Performing these steps in different orders is within the scope of the present disclosure. Within the spirit and scope of the embodiments of the present disclosure, the steps may be added, replaced, changed, and/or omitted as appropriate.

Although this case has been disclosed as above by way of implementation, it is not intended to limit the case. Anyone who is familiar with this technique can make various changes and modifications without departing from the spirit and scope of the case. Therefore, the scope of protection of this case should be reviewed. The attached patent application scope shall prevail.

300‧‧‧Data transmission method

Steps S310 to S360‧‧‧

Claims (10)

A data transmission method is suitable for a data transmission system, wherein the data transmission system includes a host and a peripheral device, wherein the data transmission method includes: a processor of the host sets at least one identification number to be stored in the host At least one packet; transmitting the at least one packet from the host to the peripheral device via a transmission medium; a processor of the peripheral device allocates the at least one packet to the at least one packet according to the at least one identification number of the at least one packet A plurality of temporary storage blocks of a memory of the peripheral device corresponding to the identification number, wherein each of the temporary storage blocks includes a threshold value, and at least two of the temporary storage blocks each have the threshold value Different; and when one of the temporary storage blocks reaches the threshold value of that one of the temporary storage blocks, the stored data of that one of the temporary storage blocks is transmitted through an input/output interface Part of it should be at least one package. The data transmission method described in item 1 of the request includes: setting the threshold value of each of the temporary storage blocks of the peripheral device, wherein the threshold value includes the number of packets or a storage capacity; and the host computer The processor determines the priority of each of the at least one packet. According to the data transmission method of claim 1, further comprising: setting the at least one identification number to the at least one packet according to a priority of each of the at least one packet, wherein the temporary storage blocks include a first temporary Storage block and a second temporary storage block, the threshold value of the first temporary storage block is less than the threshold value of the second temporary storage block, the first temporary storage block and the at least one identification number Corresponding to a first identification number; set a minimum threshold value for the first temporary storage block; and set the first identification number when a priority of a first packet in the at least one packet is high Give the first packet. The data transmission method described in item 1 of the request further includes: when the at least one packet of the part stored by the one in the temporary storage blocks has been sent out, releasing the temporary storage blocks Space for the person. The data transmission method of claim 1, further comprising: obtaining one of the at least one packet from a memory of the host by a multiplexing circuit of the host, and according to the at least one packet in the at least one packet A priority of the person sets one of the at least one identification number to the person in the at least one packet. A data transmission system including: A host includes: a memory for storing at least one packet; and a processor for setting at least one identification number to the at least one packet, and transmitting the at least one packet via a transmission medium; and a peripheral device, It is connected to the host via the transmission medium to receive the at least one packet, wherein the peripheral device includes: a memory, including a plurality of temporary storage blocks, wherein the temporary storage blocks each include a threshold value, the The threshold values of at least two temporary storage blocks in the temporary storage blocks are different; and a processor for allocating the at least one packet to the at least one identification number according to the at least one identification number of the at least one packet Corresponding to the temporary storage blocks, when one of the temporary storage blocks reaches the threshold value of that one of the temporary storage blocks, the temporary storage blocks are transmitted through an input/output interface At least one package of the part stored by that person. For the data transmission system described in claim 6, wherein the processor of the host is further used to set the threshold value of each of the temporary storage blocks, wherein the threshold value includes the number of packets or a storage capacity, wherein The processor of the host is further used to determine the respective priority of the at least one packet. According to the data transmission system of claim 6, wherein the processor of the host is further configured to set the at least one identification number to the at least one packet according to a priority of each of the at least one packet, wherein the temporary storage Area The block includes a first temporary storage block and a second temporary storage block. The threshold value of the first temporary storage block is smaller than the threshold value of the second temporary storage block, wherein the first temporary storage block Corresponding to a first identification number in the at least one identification number, wherein when a priority of a first packet in the at least one packet is high, a minimum threshold value is set for the first temporary storage block , And set the first identification number to the first packet. The data transmission system according to claim 6, wherein when the at least one packet of the part stored by the one in the temporary storage blocks is sent out, the data transmission system in the temporary storage blocks is released space. The data transmission system according to claim 6, wherein the processor of the host includes: a multiplexing circuit for obtaining one of the at least one packet from the memory of the host, and according to the at least A priority of the person in a package sets one of the at least one identification number to the person in the at least one package.

Images